Duration: Annual

Nativity: Native

Lifeform: Forb/Herb

General: Habit: Slender; hairs 0, coarse, or glandular. Stem: decumbent or erect, 5--25(50) cm, peeling.

Leaves: Leaf: 5--30 mm, linear to narrowly elliptic or narrowly oblanceolate, minutely to coarsely serrate.

Flowers: Flower: hypanthium 1.5--5 mm; sepals 3--8(12) mm, remaining adherent in pairs; petals (3.5)5--15 mm, yellow fading +- red, basal spots (1)2; stigma exceeding anthers.

Fruits: Fruit: 20--43 mm, 0.7--2 mm wide, alternately narrow and swollen by seeds, straight or wavy, +- sessile. Seed: 0.8--1.6 mm.

Ecology: Var. campestris found in Open sandy flats, desert scrub, inland grassland; below 2000 m. Var obispoensis found in marine deposits in openings in chaparral and oak woodland; below 500 m. Flowes March-May.

Distribution: s CA; 1 location recorded in neighboring w AZ

Notes: Subspecies intergrade extensively.

Synonyms: Oenothera dentata var. campestris, Sphaerostigma campestre, Sphaerostigma dentatum subsp. campestre

Editor: hazelton pasted from jepson